连翘天然林抚育成效评价研究

Study on Tending Effect Evaluation of Natural Forsythia Suspensa Forest

笔者以天然连翘林为研究对象,设置4个抚育密度,分别保留连翘植株1650株/hm^( 2),3300株/hm^( 2),4950株/hm^( 2),8250株/hm^( 2),以未抚育的连翘林作为对照,分析了不同抚育密度对天然连翘生长量和产量的影响。结果表明,抚育对天然连翘物候期没有影响,1650株/hm^( 2)和3300株/hm^( 2)的连翘在株高、冠幅和萌发分枝数上显著高于其它处理;1650株/hm^( 2)连翘试验地青翘单株产量最高,而单位面积产量以3300株/hm^( 2)最高。

Taking natural Forsythia suspensa forest as the research object,4 tending densities were set such as 1650 plants/hm^( 2),3300 plants/hm^( 2),4950 plants/hm^( 2),8250 plants/hm^( 2).The effects of different tending densities on the growth and yield of natural Forsythia suspensa forest were analyzed with the Forsythia suspensa forest without tending as the control.The results showed that tending had no effect on the phenological period of natural Forsythia suspense forest.Plant height,crown width and germination branch number of Forsythia suspense forest which tending densities were 1650 plants/hm^( 2) and 3300 plants/hm^( 2) were significantly higher than those of other treatments.Yield per plant reached the highest in the Forsythia suspense field which tending densities was 1650 plants/hm^( 2),and yield per unit area reached the highest in the Forsythia suspense field which tending densities was 3300 plants/hm^( 2).